2009 Audi A4 vs. 2005 Porsche 911
To start off, 2009 Audi A4 is newer by 4 year(s). Which means there will be less support and parts availability for 2005 Porsche 911. In addition, the cost of maintenance, including insurance, on 2005 Porsche 911 would be higher. At 3,605 cc (6 cylinders), 2005 Porsche 911 is equipped with a bigger engine. In terms of performance, 2005 Porsche 911 (445 HP @ 6000 RPM) has 184 more horse power than 2009 Audi A4. (261 HP @ 6500 RPM) In normal driving conditions, 2005 Porsche 911 should accelerate faster than 2009 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi A4 weights approximately 40 kg more than 2005 Porsche 911.
Let's talk about torque, 2005 Porsche 911 (620 Nm) has 290 more torque (in Nm) than 2009 Audi A4. (330 Nm). This means 2005 Porsche 911 will have an easier job in driving up hills or pulling heavy equipment than 2009 Audi A4.
Compare all specifications:
| 2009 Audi A4 | 2005 Porsche 911 | |
| Make | Audi | Porsche |
| Model | A4 | 911 |
| Year Released | 2009 | 2005 |
| Body Type | Station Wagon | Coupe |
| Engine Position | Front | Rear |
| Engine Size | 3197 cc | 3605 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | boxer |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 261 HP | 445 HP |
| Engine RPM | 6500 RPM | 6000 RPM |
| Torque | 330 Nm | 620 Nm |
| Engine Bore Size | 84.6 mm | 100 mm |
| Engine Stroke Size | 92.8 mm | 76 mm |
| Engine Compression Ratio | 12.5:1 | 9.4:1 |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1630 kg | 1590 kg |
| Vehicle Length | 4710 mm | 4440 mm |
| Vehicle Width | 1830 mm | 1840 mm |
| Vehicle Height | 1440 mm | 1300 mm |
| Wheelbase Size | 2810 mm | 2360 mm |
| Fuel Consumption Overall | 9.1 L/100km | 13.1 L/100km |
| Fuel Tank Capacity | 64 L | 63 L |
